thodg/libgit2/src/posix.h

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• Hash : e40f1c2d
  Author :
  Date : 2013-03-08T16:39:57
  

  Make tree iterator handle icase equivalence There is a serious bug in the previous tree iterator implementation. If case insensitivity resulted in member elements being equivalent to one another, and those member elements were trees, then the children of the colliding elements would be processed in sequence instead of in a single flattened list. This meant that the tree iterator was not truly acting like a case-insensitive list. This completely reworks the tree iterator to manage lists with case insensitive equivalence classes and advance through the items in a unified manner in a single sorted frame. It is possible that at a future date we might want to update this to separate the case insensitive and case sensitive tree iterators so that the case sensitive one could be a minimal amount of code and the insensitive one would always know what it needed to do without checking flags. But there would be so much shared code between the two, that I'm not sure it that's a win. For now, this gets what we need. More tests are needed, though.

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• src/posix.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_posix_h__
  #define INCLUDE_posix_h__
  
  #include "common.h"
  #include <fcntl.h>
  #include <time.h>
  #include "fnmatch.h"
  
  #ifndef S_IFGITLINK
  #define S_IFGITLINK 0160000
  #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
  #endif
  
  /* if S_ISGID is not defined, then don't try to set it */
  #ifndef S_ISGID
  #define S_ISGID 0
  #endif
  
  #if !defined(O_BINARY)
  #define O_BINARY 0
  #endif
  
  typedef int git_file;
  
  /**
   * Standard POSIX Methods
   *
   * All the methods starting with the `p_` prefix are
   * direct ports of the standard POSIX methods.
   *
   * Some of the methods are slightly wrapped to provide
   * saner defaults. Some of these methods are emulated
   * in Windows platforns.
   *
   * Use your manpages to check the docs on these.
   */
  
  extern int p_read(git_file fd, void *buf, size_t cnt);
  extern int p_write(git_file fd, const void *buf, size_t cnt);
  
  #define p_fstat(f,b) fstat(f, b)
  #define p_lseek(f,n,w) lseek(f, n, w)
  #define p_close(fd) close(fd)
  #define p_umask(m) umask(m)
  
  extern int p_open(const char *path, int flags, ...);
  extern int p_creat(const char *path, mode_t mode);
  extern int p_getcwd(char *buffer_out, size_t size);
  extern int p_rename(const char *from, const char *to);
  
  #ifndef GIT_WIN32
  
  #define p_stat(p,b) stat(p, b)
  #define p_chdir(p) chdir(p)
  #define p_rmdir(p) rmdir(p)
  #define p_chmod(p,m) chmod(p, m)
  #define p_access(p,m) access(p,m)
  #define p_recv(s,b,l,f) recv(s,b,l,f)
  #define p_send(s,b,l,f) send(s,b,l,f)
  typedef int GIT_SOCKET;
  #define INVALID_SOCKET -1
  
  #define p_localtime_r localtime_r
  #define p_gmtime_r gmtime_r
  #define p_gettimeofday gettimeofday
  
  #else
  
  typedef SOCKET GIT_SOCKET;
  struct timezone;
  extern struct tm * p_localtime_r (const time_t *timer, struct tm *result);
  extern struct tm * p_gmtime_r (const time_t *timer, struct tm *result);
  extern int p_gettimeofday(struct timeval *tv, struct timezone *tz);
  
  
  #endif
  
  /**
   * Platform-dependent methods
   */
  #ifdef GIT_WIN32
  #	include "win32/posix.h"
  #else
  #	include "unix/posix.h"
  #endif
  
  #ifdef NO_READDIR_R
  #	include <dirent.h>
  GIT_INLINE(int) p_readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
  {
  	GIT_UNUSED(entry);
  	*result = readdir(dirp);
  	return 0;
  }
  #else /* NO_READDIR_R */
  #	define p_readdir_r(d,e,r) readdir_r(d,e,r)
  #endif
  
  #ifdef NO_ADDRINFO
  #	include <netdb.h>
  struct addrinfo {
  	struct hostent *ai_hostent;
  	struct servent *ai_servent;
  	struct sockaddr_in ai_addr_in;
  	struct sockaddr *ai_addr;
  	size_t ai_addrlen;
  	int ai_family;
  	int ai_socktype;
  	int ai_protocol;
  	long ai_port;
  	struct addrinfo *ai_next;
  };
  
  extern int p_getaddrinfo(const char *host, const char *port,
  	struct addrinfo *hints, struct addrinfo **info);
  extern void p_freeaddrinfo(struct addrinfo *info);
  extern const char *p_gai_strerror(int ret);
  #else
  #	define p_getaddrinfo(a, b, c, d) getaddrinfo(a, b, c, d)
  #	define p_freeaddrinfo(a) freeaddrinfo(a)
  #	define p_gai_strerror(c) gai_strerror(c)
  #endif /* NO_ADDRINFO */
  
  #endif
  

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